quatrilhão

Portuguese

Portuguese numbers ^(edit)

[a], [b] ←  1,000,000,000 (109)	[a], [b] ←  1012	1015	1018  → [a], [b]	1021  → [a], [b]
Cardinal (Brazil): um quatrilhão, um quadrilhão     Cardinal (everywhere but Brazil): mil biliões     Ordinal (Brazil): quatrilionésimo, quadrilionésimo     Ordinal (Portugal): milésimo bilionésimo, milésimo de bilionésimo     Fractional (Brazil): quatrilionésimo, quadrilionésimo, um quatrilhão avos, um quadrilhão avos     Fractional (Portugal): milésimo bilionésimo, milésimo de bilionésimo     Fractional (everywhere but Brazil): mil biliões avos
Portuguese Wikipedia article on 1015

Alternative forms

• quadrilhão

Etymology

Borrowed from French quatrillion.

Pronunciation

• (Brazil) IPA^(key): /kwa.tɾiˈʎɐ̃w̃/ [kwa.tɾiˈʎɐ̃ʊ̯̃]

• (Portugal) IPA^(key): /kwɐ.tɾiˈʎɐ̃w̃/

• Hyphenation: qua‧tri‧lhão

Noun

quatrilhão m (plural quatrilhões)

1. (Brazil, cardinal number) quadrillion (10¹⁵)

   Synonym: (Angola, Portugal) mil biliões

2. (Portugal, informal, cardinal number) Synonym of quatrilião (“10¹⁸”)

Usage notes

• Portuguese-speaking countries follow the traditional long scale, with the exception of Brazil which adopted the short scale used in the UK and US. The number 10¹⁵ is expressed as mil biliões in African and European Portuguese, but as um quadrilhão/quatrilhão in Brazilian Portuguese.
• The Angolan Government proscribes the use of long scale.
• In Portugal, the alternative um quadrilhão/quatrilhão (“one septillion, 10²⁴”) is an informal spelling of the preferred and proscribed um quadrilião/quatrilião.